Home / 221,985-338,517

Finding the Third Proportional to 221,985 and 338,517

Calculator

Solution

The third proportional to 221,985 and 338,517 is: 516,222.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,985 : 338,517 = 338,517 : x
  2. Step 2: Convert to fraction form
    221,985/338,517 = 338,517/x
  3. Step 3: Cross multiply
    221,985x = 338,517 × 338,517
  4. Step 4: Simplify right side
    221,985x = 114,593,759,289
  5. Step 5: Solve for x
    x = 114,593,759,289/221,985
  6. Step 6: Final answer
    x = 516,222.98

Related Problems

Find third proportional to 110,992.50 and 169,258.50
Half scale
Find third proportional to 443,970 and 677,034
Double scale
Find third proportional to 221,987 and 338,520
Similar ratio
Find third proportional to 332,977.50 and 507,775.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.